11

FN9202.2

May 10, 2006

DCIN

ACSET

VDDP

VDD

ACPRN

CHLIM

EN

ICM

ACLIM

VREF

ICOMP

VCOMP

VADJ

Q1

Q2

L

10µH

C1

10µF

C10

10µF

R1

40m

Ω

AC ADAPTER

R2

20m

Ω

R4

2.2

Ω

R5

100k

R8

130k

1%

R9

10.2k,1%

C2

0.1µF

C4

0.1µF

C3

1µF

6.8nF

C9

1µF

C8

0.1µF

ISL6251

ISL6251A

C5

10nF

FLOATING

4.2V/CELL

R6

10k

C7

1µF

R10

4.7

Ω

Battery

Pack

BAT+

SCL

SDL

TEMP

BAT-

SCL

SDL

A/D INPUT

GND

5.15A INPUT

CURRENT LIMIT

3 CELLS

HOST

R11, R12, R13

10k

D1

Optional

VDDP

D2

D3

R7: 100

Ω

CSIP

CSIN

BOOT

UGATE

PHASE

LGATE

PGND

CSOP

CSON

CELLS

GND

C11

3300pF

D4

SYSTEM LOAD

DCIN

ACSET

VDDP

VDD

ACPRN

CHLIM

EN

ICM

ACLIM

VREF

ICOMP

VCOMP

VADJ

R3: 18

Ω

C6

ISL6251

ISL6251A

Battery

Pack

BAT+

SCL

SDL

TEMP

BAT-

Battery

Pack

BAT+

SCL

SDL

TEMP

BAT-

VCC

OUTPUT

D/A OUTPUT

A/D INPUT

DIGITAL

INPUT

AVDD/VREF

CSIP

CSIN

BOOT

UGATE

PHASE

LGATE

PGND

CSOP

CSON

CELLS

GND

FIGURE 13. ISL6251, ISL6251A TYPICAL APPLICATION CIRCUIT WITH MICRO-CONTROLLER

ISL6251, ISL6251A